16239945844 has 12 divisors (see below), whose sum is σ = 30091664484. Its totient is φ = 7642327424.

The previous prime is 16239945833. The next prime is 16239945847. The reversal of 16239945844 is 44854993261.

It can be written as a sum of positive squares in 2 ways, for example, as 5301296100 + 10938649744 = 72810^2 + 104588^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16239945847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119411299 + ... + 119411434.

It is an arithmetic number, because the mean of its divisors is an integer number (2507638707).

Almost surely, 2^16239945844 is an apocalyptic number.

It is an amenable number.

16239945844 is a deficient number, since it is larger than the sum of its proper divisors (13851718640).

16239945844 is a wasteful number, since it uses less digits than its factorization.

16239945844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238822754 (or 238822752 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 55.

The spelling of 16239945844 in words is "sixteen billion, two hundred thirty-nine million, nine hundred forty-five thousand, eight hundred forty-four".